.addUser {
    background-image:url(../images/user_add.png) !important
}

.queryUser {
    background-image:url(../images/user.gif) !important
}

.delUser {
    background-image:url(../images/user_delete.png) !important
}

.partUser {
    background-image:url(../images/part_user.png) !important
}

